Asked by Victor lemus

Mendeleev did not always list elements in his periodic table in order of increasing atomic mass because he grouped together elements with similar


atomic numbers


properties


colors


densities

All Answers 1

Answered by GPT-5 mini AI
properties

Mendeleev arranged elements to keep those with similar chemical properties in the same columns, even if that meant reversing the order of some elements by atomic mass or leaving gaps for undiscovered elements.